Donald Trump pulled the United States out of the last Iran nuclear deal during his first term as US president. Now back in the White House, he’s pushing for a new deal and the US and Iran are talking again.

What do both sides want from the negotiations? Why are they happening now? And how close is Iran to getting a nuclear weapon? Start Here with Sandra Gathmann explains.

This episode features:

James Bays | Diplomatic Editor, Al Jazeera English

Ali Vaez | Iran Project Director, International Crisis Group